Nonlinear dynamics in orthogonal turning process |
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| Institution: | 1. School of Aeronautics, Northwestern Polytechnical University, Xi''an 710072, China;2. China Academy of Launch Vehicle Technology, Beijing 100076, China;3. Computer Network Information Center, Chinese Academy of Sciences, Beijing 100190, China;4. The 52nd Research Institute of China Electronics Technology Group Corporation, Hangzhou 310000, China;5. School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China;1. KTH Royal Institute of Technology, Sweden;2. Microelectronics and Materials Physics Laboratories, P.O. Box 4500, FI-90014 University of Oulu, Finland;3. Materials Engineering, P.O. Box 4200, FI-90014 University of Oulu, Finland;1. S R Engineering College, Ananthasagar, Warangal 506371, India;2. Centre for Materials and Manufacturing, S R Engineering College, Ananthasagar, Warangal 506371, India;1. Auburn University, Department of Industrial and Systems Engineering, 3323 Shelby Center for Engineering Technology, Auburn, AL, USA;2. Auburn University, Department of Industrial and Systems Engineering, 3301-F Shelby Center for Engineering Technology, Auburn, AL, USA;3. Auburn University, Department of Mechanical Engineering, 3434 Wiggins Hall, Auburn, AL, USA;4. Auburn University, Department of Mechanical Engineering, 3401 Wiggins Hall, Auburn, AL, USA;5. Auburn University, Department of Industrial and Systems Engineering, 3341 Shelby Center for Engineering Technology, Auburn, AL, USA;6. Auburn University, Department of Industrial and Systems Engineering, 3304 Shelby Center for Engineering Technology, Auburn, AL, USA;1. School of Energy and Power Engineering, Beihang University, Beijing, 100191, China;2. Co-Innovation Center for Advanced Aero-Engine, Beijing, 100191, China;3. Center for Assessment and Demonstration Research, Academy of Military Sciences, Beijing 100091, China;4. School of Astronautics, Beihang University, Beijing, 100191, China |
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| Abstract: | In this paper, the nonlinear dynamics methods were applied to analyze the experimental data captured during the orthogonal turning process. The analyzed data were the acquired time series represented by the cutting and thrust forces acting on the cutting tool. Workpieces of aluminum alloy, ductile cast iron, and gray cast iron were machined. The false nearest neighbors and the largest Lyapunov methods were considered to study the nonlinear phenomena occurring in turning process. An index of stability was also defined and used to compare the turning processes of all tested workpieces. |
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